axial forcing fan

An axial forcing fan is a press-in mine ventilator that employs an axial impeller to generate high airflow at moderate static pressure, well suited to delivering fresh air through ducts to headings and faces. The axial configuration offers compact size, low mass, and favorable efficiency when matched to the system curve. Where higher pressure is necessary without increasing diameter, contra-rotating stages may be introduced to extend the duty range.

Typical construction features include streamlined inlet collectors, adjustable or fixed-pitch blades, and integrated silencers for noise control near workplaces. Explosion-proof motors and enclosures are used in gassy environments, together with anti-static ducting and compliant starters. Variable-frequency drives facilitate flow trimming as duct length increases with advance, maintaining the duty point close to peak efficiency.

Selection should consider face quantity, total pressure losses (length, bends, fittings, leakage), available power, and installation constraints. Proper duct sealing, smooth transitions, and adequate diffuser/nozzle design at the face enhance delivery and reduce turbulence. Routine monitoring of vibration and temperature supports predictive maintenance and long service life.

• Strengths: high specific flow, compact layout, efficient press-in supply
• Options: single or contra-rotating stages, silencers, VFD
• Compliance: explosion-proof variants for gassy mines